Chattahoochee Formation

The Chattahoochee Formation, originally named by Dall and Stanley-Brown (1894), is predominantly a yellowish gray, poorly to moderately indurated, fine-grained, often fossiliferous (molds and casts), silty to finely sandy dolostone (Huddlestun, 1988). Siliciclastic beds and limestones may be present. The Chattahoochee Formation is exposed in Jackson County, central panhandle, on the Chattahoochee "Anticline". It grades laterally across the Gulf Trough into the St. Marks Formation through a broad transition area (Scott, 1986). The Chattahoochee Formation forms the upper part of the FAS in the central panhandle.
State Florida
Name Chattahoochee Formation
Geologic age Miocene
Lithologic constituents
Major
Sedimentary > Carbonate > Dolostone (Bed)Predominantly a yellowish gray, poorly to moderately indurated, fine-grained, often fossiliferous (molds and casts), silty to finely sandy dolostone.
Incidental
Sedimentary > Carbonate > Limestone (Bed)Siliciclastic beds and limestones may be present.
Sedimentary > Clastic > Sandstone (Bed)Siliciclastic beds and limestones may be present.
References

Scott, T.M., Campbell, K.M., Rupert, F.R., Arthur, J.D., Missimer, T.M., Lloyd, J.M., Yon, J.W., and Duncan, J.G., 2001, Geologic Map of the State of Florida, Florida Geological Survey & Florida Department of Environmental Protection, Map Series 146, scale 1:750,000.

Scott, Thomas M.P.G. #99, Text to Accompany the Geologic Map of Florida, Open-file Report 80, Florida Geological Survey, 2001.

Huddlestun, P.F., 1988, A revision of the lithostratigraphic units of the Coastal Plain of Georgia - The Miocene: Georgia Geological Survey Bulletin 104, 162 p.

Dall, W.H. and Stanley-Brown, 1894, Cenozoic geology along the Apalachicola River: Geological Society of America Bulletin, v. 5, p.147-170.

Scott, T.M., 1986, The lithostratigraphic relationships of the Chattahoochee, St. Marks and Torreya Formations, eastern Florida Panhandle: Florida Academy of Sciences, Abstract, Florida Scientist v. 49, supplement 1, p. 29.

NGMDB product
Counties Calhoun - Gadsden - Jackson - Liberty